JSON.uts

import { describe, test, expect, Result } from './tests.uts'

export function testJSON() : Result {
    return describe("JSON", () => {
        test('parse', () => {
            const json = `{"result":true, "count":42}`;
            const obj = JSON.parse(json)!;
            expect(obj["count"]).toEqual(42);
            expect(obj["result"]).toEqual(true);

            const json1 = `{
                "name": "John",
                "age": 30,
                "city": "New York"
              }`;
            const obj1 = JSON.parse(json1);
            expect(obj1).toEqual({
                name: 'John',
                age: 30,
                city: 'New York',
            });

            const json2 = '{"string":"Hello","number":42,"boolean":true,"nullValue":null,"array":[1,2,3],"object":{"nestedKey":"nestedValue"}}';
            const obj2 = JSON.parse(json2)!;
            expect(obj2).toEqual({
                string: 'Hello',
                number: 42,
                boolean: true,
                nullValue: null,
                array: [1, 2, 3],
                object: {
                    nestedKey: 'nestedValue',
                },
            });
            expect(obj2['object']).toEqual({
                nestedKey: 'nestedValue',
            })

            // const json3 = '["apple","banana","cherry"]';
            // const obj3 = JSON.parse(json3)!;
            // TODO JSON.parse 后数组的类型 无法强转
            // expect(obj3).toEqual(['apple', 'banana', 'cherry']);

            // const json4 = '[1, "two", true, null, {"key": "value"}, ["nested"]]';
            // const obj4 = JSON.parse(json4)!;
            // expect(obj4).toEqual([1, 'two', true, null, { key: 'value' }, ['nested']]);

            // TODO 暂不支持多个参数
            // const json5 = '{"p": 5}';
            // const obj5 = JSON.parse(json5, function (k : string, v : number) : number {
            //     if (k === '') return v;
            //     return v * 2;
            // })!;
            // expect(obj5).toEqual({
            //     p: 10,
            // });

            expect(JSON.parse('{}')!).toEqual({});
            // TODO 不支持boolean、string，js端需抹平
            // expect(JSON.parse('true')!).toEqual(true);
            // expect(JSON.parse('"foo"')!).toEqual("foo");
            // expect(JSON.parse('null')!).toEqual(null);
        })
        test('stringify', () => {
            const obj = { name: 'John', age: 30 };
            const json = JSON.stringify(obj);
            expect(json).toEqual('{"name":"John","age":30}');

            const obj1 = { name: 'John', age: 30, address: { city: 'New York', country: 'USA' } };
            const json1 = JSON.stringify(obj1);
            expect(json1).toEqual('{"name":"John","age":30,"address":{"city":"New York","country":"USA"}}');

            const obj2 = ['apple', 'banana', 'cherry'];
            const json2 = JSON.stringify(obj2);
            expect(json2).toEqual('["apple","banana","cherry"]');

            // TODO 暂不支持多个参数
            // const obj3 = { name: 'John', age: '30' };
            // const replacer = (key : string, value : string) : string => (key === 'name' ? value.toUpperCase() : value);
            // const json3 = JSON.stringify(obj3, replacer);
            // expect(json3).toEqual('{"name":"JOHN","age":"30"}');

            // const obj4 = { name: 'John', age: 30 };
            // const json4 = JSON.stringify(obj4, null, 4);
//             expect(json4).toEqual(`{
//     "name": "John",
//     "age": 30
// }`);
            expect(JSON.stringify({ x: 5, y: 6 })).toEqual(`{"x":5,"y":6}`);
            expect(JSON.stringify([3, 'false', false])).toEqual(`[3,"false",false]`);
            expect(JSON.stringify({})).toEqual('{}');
            expect(JSON.stringify(true)).toEqual('true');
            expect(JSON.stringify('foo')).toEqual('foo');
        })
    })
}